如何使用 SwiftUI 获取当前位置?

问题描述

尝试使用 swiftUI 获取当前位置.下面的代码，无法使用 didUpdateLocations 委托进行初始化.

Trying to get current location with using swiftUI. Below code, couldn't initialize with didUpdateLocations delegate.

class GetLocation : BindableObject {
    var didChange = PassthroughSubject<GetLocation,Never>()

    var location : CLLocation {
        didSet {
            didChange.send(self)
        }
    }
    init() {}
}

推荐答案

以下代码有效(未准备好生产).实现 CLLocationManagerDelegate 工作正常，并且 lastKnownLocation 相应更新.

This code below works (Not production ready). Implementing the CLLocationManagerDelegate works fine and the lastKnownLocation is updated accordingly.

不要忘记在 Info.plist

class LocationManager: NSObject, ObservableObject, CLLocationManagerDelegate {
    private let manager = CLLocationManager()
    var lastKnownLocation: CLLocation?

    func startUpdating() {
        manager.delegate = self
        manager.requestWhenInUseAuthorization()
        manager.startUpdatingLocation()
    }

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        print(locations)
        lastKnownLocation = locations.last
    }

    func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
        if status == .authorizedWhenInUse {
            manager.startUpdatingLocation()
        }
    }
}

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